Penumbral lunar eclipse of 2020, January 10


     The beginning of the eclipse is visible from  Eurasia,  Alaska,  Australia,
 northeast part of Africa, Madagascar, Arctic, west of Pacific,  and Indian oce-
 ans.
     The end of the eclipse is visible from Eurasia, Africa, Madagascar,  north
 of North America, Greenland, Arctic, Indian, and Atlantic oceans.


                   Universal time of geocentric opposition
                                                         h  m  s
                in right ascension  2020, January 10,  19 04 13.6

                                                  Sun              Moon
                                                h  m  s          h  m  s
  Right ascension  . . . . . . . . . . . . .  19 26 30.986      7 26 30.985
                                                      s                s   
     Hourly motion . . . . . . . . . . . . .       +10.865         +153.374
                                                o  '  "          o  '  "   
  Declination. . . . . . . . . . . . . . . . -21 56 51.81     +23 00 14.53 
                                                      "                "   
     Hourly motion . . . . . . . . . . . . .       +22.41          -120.75 
                                                      "             '  "   
  Equatorial horizontal parallax . . . . . .         8.94         59 00.63 
                                                   '  "             '  "   
  Apparent semidiameter  . . . . . . . . . .     16 15.89         16 04.80 



                         Circumstances of the Eclipse
                                                             Position Angles
                                                           of the Moon's axis
                                                       h  m        o
     Moon enters penumbra . . . . . . . January  10, 17 05.7      9.46
     Greatest eclipse . . . . . . . . .              19 10.1      9.95
     Moon leaves penumbra . . . . . . .              21 14.5     10.44

 -----------------------------------------------
  Contacts |  Position |The Moon being in the Zenith in
of penumbra|   Angles  |------------------------
 with Limb |  from the |          |            
  of Moon  |North Point| Latitude | Longitude  
 ----------|-----------|----------|-------------       
           |    o  '   |    o  '  |    o  '    
 First     | 135 20.6  ¦ +23 12.3 ¦ 104 15.5 E  
 Last      | 230 30.9  ¦ +23 03.8 ¦  44 32.0 E 

 Magnitude of the eclipse          0.919
                                    "   
 Angular radius of the penumbra 4615.85 
                                    "   
 Angular radius of the umbra    2625.34 


------------------------------------------------------------------------------
  T  |  s  |   d  |   P  |Magnitudes ofI  T  |  s  |   d  |   P  |Magnitudes of
     |     |      |      |  penumbral  I     |     |      |      |  penumbral           
-----|-----|------|------|-------------I-----|-----|------|------|------------
  h m¦    "¦      ¦    o ¦             I  h m¦    "¦      ¦    o ¦             
17 00¦ 5709¦ 2.177¦ 134.1¦      Д      I19 20¦ 3812¦ 1.452¦ 187.9¦    0.911    
   10¦ 5468¦ 2.085¦ 136.4¦    0.054    I   30¦ 3854¦ 1.468¦ 192.8¦    0.890    
   20¦ 5238¦ 1.997¦ 138.9¦    0.173    I   40¦ 3924¦ 1.494¦ 197.6¦    0.854    
   30¦ 5018¦ 1.913¦ 141.7¦    0.287    I   50¦ 4019¦ 1.530¦ 202.1¦    0.805    
   40¦ 4810¦ 1.834¦ 144.7¦    0.395    I     ¦     ¦      ¦      ¦
   50¦ 4616¦ 1.760¦ 147.9¦    0.495    I20 00¦ 4138¦ 1.575¦ 206.5¦    0.744    
     ¦     ¦      ¦      ¦             I   10¦ 4279¦ 1.629¦ 210.6¦    0.672    
18 00¦ 4438¦ 1.692¦ 151.4¦    0.587    I   20¦ 4439¦ 1.690¦ 214.4¦    0.589    
   10¦ 4278¦ 1.630¦ 155.2¦    0.670    I   30¦ 4618¦ 1.758¦ 217.9¦    0.497    
   20¦ 4137¦ 1.576¦ 159.3¦    0.743    I   40¦ 4813¦ 1.832¦ 221.2¦    0.396    
   30¦ 4018¦ 1.531¦ 163.7¦    0.804    I   50¦ 5021¦ 1.911¦ 224.2¦    0.289    
   40¦ 3923¦ 1.495¦ 168.2¦    0.853    I     ¦     ¦      ¦      ¦
   50¦ 3854¦ 1.468¦ 173.0¦    0.889    I21 00¦ 5242¦ 1.995¦ 226.9¦    0.175    
     ¦     ¦      ¦      ¦             I   10¦ 5474¦ 2.083¦ 229.4¦    0.055    
19 00¦ 3812¦ 1.452¦ 177.9¦    0.911    I   20¦ 5715¦ 2.174¦ 231.8¦      Д      
   10¦ 3798¦ 1.447¦ 182.9¦    0.919    I     ¦     ¦      ¦      ¦
                      
   T - universal time ( TDT - UT1 = 70.0s);
   s - the angular distance between the centers of the Moon and the shadow;
   d - the linear distance between the Moon's center and that of the shadow
       in terms of the shadow's radius;
   P - the position angle of the Moon's disk semi-diameter directed towards
       the shadow's center.